Camera module

a camera module and camera technology, applied in the field of camera modules, can solve the problems of inability to shorten the time required for application operation, inability to shorten the time required for manufacturing the camera module, and extremely narrow end surface of the cylindrical end portion, so as to achieve convenient and reliable
US7492538B2Inactive Publication Date: 2009-02-17MITSUMI ELECTRIC CO LTD
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Patents(United States)
Current Assignee / Owner
MITSUMI ELECTRIC CO LTD
Publication Date
2009-02-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

A camera module having a holder including a leans unit and upper and lower leaf springs for displaceably supporting is provided. Each of the leaf springs has an outer annular portion, an inner annular portion, and bridge portions couple between the outer annular portion and the inner annular portion for resiliently support the inner annular portion with respect to the outer annular portion. The inner annular portion of the lower leaf spring is attached to an lower cylindrical end portion of the holder mechanically and reliably, and the inner annular portion of the upper leaf spring is attached to the upper cylindrical end portion of the holder in a state that the inner annular portion is fixedly held between an upper cylindrical end portion of the holder and a stopper. According to the camera module having the above structure, since the bonding operating using a synthetic resin that was performed in the conventional camera module can be omitted, it is possible to shorten a time necessary for manufacturing a camera module.
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Description

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] This invention relates to a camera module, and more specifically to a camera module that can be used in small-sized electronic apparatuses such as digital cameras, camera-equipped cellular phones and the like.

[0003] 2. Description of the Prior Art

[0004] A camera module having a function of displacing a lens unit in a direction of an optical axis of the lens unit is used in relatively small-sized digital cameras, camera-equipped cellular phones and the like. This function is used for providing an autofocus function and / or zoom function and the like, and is achieved by an interaction between a magnetic field generated by an electrical current flowing in a coil and a magnetic field generated by a yoke and magnets provided on the yoke.

[0005] Such a camera module includes a barrel which holds the lens unit, a holder which houses the barrel therein, and a pair of leaf springs for supporting the holder so that the holder is displ...

Claims

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